Hi,

Il 04/11/25 14:50, Zhao Zhili ha scritto:
The specification says that if either the numerator or the
denominator is zero then the SAR is to be intended unspecified.
Internally ffmpeg represents an unspecified SAR as 0/1, while
fractions with a zero denominator are not handled properly;

Is there any known issue?

I observed this problem with a bunch of video files provided by game OddBallers when executed with Wine/Proton. There is some more backstory on my first submission of this patch last year:

  https://ffmpeg.org/pipermail/ffmpeg-devel/2024-July/331835.html

Thanks, Giovanni.

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